Throughout the world, Iaou (Ewe 
, Iaou) is quite a rare gender-neutral first name. The forename Iaou is habitual in Bahrain, where it is quite a rare female name, Poland, where it is a rare girly name, and Nigeria, where it is a rare epicene name. Not in comparison with a country's population, it most frequently occurs in Nigeria, Poland, and Indonesia. More frequently, Iaou is the last name as well as the forename.